This square coaster is perfect for use at work or at home and makes a great Christmas gift. Our 4 color coaster with the American Airlines Mercury bag sticker from the 1950's is laminated with a cork back. On the cover is the AA Mercury back sticker. The coaster measures 3.75" x 3.75". Get 4 of the same coaster for just $10. Sorry we can't mix and match on the 4 pack orders. More coasters on our website with other logo's and images. Check them all out!